Trolley frog



April 28, 1931. GEORGE 1,803,061

I TROLLEY FROG Filed Feb. 3, 1930 2 Sheets-Sheet 1 J? 9 60:76 gmwfim Aiiomey I Inventor April 28, 1931. s. A; GEORGE TROLLEY FROG Filed Feb.3, 1930 Inventor Attorney 2 Sheets-Sheet 2 B J, (/7, gorqe Patented Apr.28, 1931 UNITED STATES DUNCAN MAY, or. JOHNSTOWN,BENNSYLYANIA 1,,

' TROLLEY ace Application filed February 3, i930. Serial Np. 425,502.

The present invention relates to trolley frogs and has for its principalobject to provide an adjustable arm at one end of the frog by means ofwhich a branch trolley wire may be attached thereto at the proper angleat which the wire extends from the frog.

A further object is to provide a guard shield to prevent the trolleypole from striking the connected edges of the arms of the trolley frogshould the trolley pole jump from the trolley.

A further object is to provide a trolley frog of a simple and practicalconstruction, which is strong and durable, which may be easily andquickly mounted in position at the intersection of the trolloy line andotherwise well adapted for the purposes for which the same is intended.7

Other objects and advantages reside in the special construction,combination and arrangement of thevarious elements, forming theinvention as more fullyhereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, where-inlike numeralsrefer to like parts throughout, and in which:

Figure 1 is a top plan view of the trolley frog with parts of the guardbroken away and shown in section,

Figure 2 is a bottom plan view,

Figure 3 is a side elevational view,

Figure 4 is a sectional view taken along a line 4-4 of Figure 1, and

Figure 5 is a fragmentary sectional view through the connection of thesingle trolley connecting arm.

Referring now to the drawings in detail wherein for the purpose ofillustration I have disclosed a preferred embodiment of the in- 40vention the numeral 5 designates the body'of the trolley fro-g which isprovided with ears 6 at each of the side edges thereof having openings 7therein for receiving cables by means of which the frog is attachedbetween 5 poles at opposite sides of the trolley line in a manner wellknown in the art.

At one end of the body a trolley attaching arm 8 is extended, the armhaving its upper surface channeled as shown at 9 for receiving 50 thetrolley line which is secured therein by a provided with a; channel inits'uppersurface clamping member 10 The inner end of the arm is securedin overlapping, relation to one edge of the body '5 ,bya screw,llyha-Ving its head countersunk in the upper surface of the body. 1 Q Ir The under side of thearm 8 is formed with the usual rounded'rib12:whichforms a continuation for the trolley wire forv guiding thetrolley overthe frog. i a [5 A pairof trolley line attaching "arms 13and 14 respectively extend outwardly from the oposite end of the. body,the arm ,14 being cast integralwith thefbody and'l being likewise forreceivingthe trolley line which-is secured therein by :theclampingmember '15; w-The under side of each of the arms13-and 14fare likewiseformed with a rounded rib-"corresponding to the ribs1i12 of the arm 8'and extend inwardly ofthe edge of the boidyfor T guiding thetrolleyacross'the frog.

'The inner end of theribs 12 are tapered assho'wn'at 16 and are slightlyspaced from each other'as. will be clearly observed from an inspectionof Figure 20f the drawings. 1

Thelarm 1'3 ispivotally attached at its inner end tothebody 5 bymeanslof athreaded stud 17ifor1'ned on the upper side of the arm andextending; through" a threaded popening; l8 formed in the body. ,"The.uppersurfaceifof "so the body adj acent 'the opening 18 is formed witha countersink 19 for receiving alnut 20 threaded on the stud 17 forsecuringthei'inner endofthearnr 13 to the body. 2. The adjacents'ideedges of the arins 1'8 and 14' are provided: with ears'21' disposedin over lapping relation with'respect to; each other and-having openings22 adapted for alining whereby toireceive a bolt 23: for securing thearms in adjusted position with "respect -'to each other.1-,In'rthis'manner thdaQngleno-fthe arn1'13 may be adjustedtoaccommodate the -angle in whicha'branch' trolleyline carried by thearm 13 extend with respect to the frog.

The upper end of the stud 17 is formed with a reduced threaded end 24with which is associated a nut 25 for securing a guard plate 26 inposition over the arms 13 and 14. The

guard plate is secured to the arms by bolts Toe i vi T 1,803,061

27 which are utilized for securing the clamps 15 upon the arms.

The outer edge of the guard plate 26 is curved upwardly as shown at 28and extends 5 outwardly beyond the ends of the arms 13 and 14 aswelliasoutwardly beyond the overlapping ears 21 and against which thetrolley pole strikes should the same jump the wire 7 while approachingthe frog. In this manner the arms '13 and l l'and the ears 21Vareprotected from the force of the trolley pole when striking the frog.7 It is obvious that my invention is susceptible to various changes andmodifications in r construction without departing from the spiritof theinvention or the scope of the appende'd'claimavandl accordingly claimall such' forms' 'ofthe device to which I am entitled. 5 nf I .2 Havingthus described my invention, what Iclai'm as-new is: 1'.- A-trolley frogcomprising a body' a pair oftrolley line attaching arms extendingoutwardly from one end thereof, means for piv 3F otally attaching theinner end of one of said 1 arms to the bodyof the-frog and'means foradjustably-attaching thearms to each other. 2: A trolley frog'comprising a body, a pair of trolley wire attaching arms extending out-439 iwardly from one edge of the. frog, means for Ipivotal ly attachingone of the arms to the odyofthefrog, means for adjustably conenecting'the arms to each other and a guard plate secured to thevbody andto said arm 7 3, withits outer edge "protruding outwardly from the outeredge of thearm.

3. I A trolley frogicomprising abody, a pair of trolley wireattachingarms extending outwardly from one edge thereof, means for 4,pivotallylattaching 'one'of'the arms to the body and apair of earsat'the side edges'of the" arms disposedin overlapping relation andhaving alined openings for receiving a boltwhereby toadjustably securethe'arm with: respect to'each other. I Y: '4. A trolley frog-comprisinga body, a pair of trolley iwireattachin'g' arms extending out wardlyfrom one edge thereof, means for pivotally attaching one of the armsto'the body and 'a' pair of earsat the side edges of the armsrdisposedin overlapping relation and having-alined openings forreceiving a-bolt whereby'to adjustably secure the arm with respect toeachother, and a guard plate se-' cured to the body and extendingoutwardly over the arm whereby to protect-said ears 1 from adisplaced';ftrolley pole approaching the frog. p r In' testimonywhereofI- afiix my signature."

STEPHEN. A. GEORGE.

